One of the possible ways to test RCU is to use rcutorture kernel module. The test requires that kernel configured with CONFIG_RCU_TORTURE_TEST. It runs rcutorture module using particular options and then inspects dmesg output for module's test results. For more information, please read Linux Documentation: RCU/torture.txt
Signed-off-by: Alexey Kodanev <[email protected]> --- v2: Make use of new LTP shell library Parse dmesg output with sed runtest/kernel_misc | 1 + testcases/kernel/device-drivers/rcu/Makefile | 22 ++++ testcases/kernel/device-drivers/rcu/rcu_torture.sh | 105 ++++++++++++++++++++ 3 files changed, 128 insertions(+), 0 deletions(-) create mode 100644 testcases/kernel/device-drivers/rcu/Makefile create mode 100755 testcases/kernel/device-drivers/rcu/rcu_torture.sh diff --git a/runtest/kernel_misc b/runtest/kernel_misc index c1826fb..8f37cc6 100644 --- a/runtest/kernel_misc +++ b/runtest/kernel_misc @@ -7,3 +7,4 @@ tbio tbio ltp_acpi ltp_acpi ltp_acpi_cpufreq ltp_acpi_cpufreq uaccess uaccess +rcu_torture.sh rcu_torture.sh diff --git a/testcases/kernel/device-drivers/rcu/Makefile b/testcases/kernel/device-drivers/rcu/Makefile new file mode 100644 index 0000000..96c6b5b --- /dev/null +++ b/testcases/kernel/device-drivers/rcu/Makefile @@ -0,0 +1,22 @@ +# Copyright (c) 2014 Oracle and/or its affiliates. All Rights Reserved. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it would be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write the Free Software Foundation, +# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + +top_srcdir ?= ../../../.. +include $(top_srcdir)/include/mk/testcases.mk + +INSTALL_TARGETS := rcu_torture.sh + +include $(top_srcdir)/include/mk/generic_leaf_target.mk diff --git a/testcases/kernel/device-drivers/rcu/rcu_torture.sh b/testcases/kernel/device-drivers/rcu/rcu_torture.sh new file mode 100755 index 0000000..fa8598e --- /dev/null +++ b/testcases/kernel/device-drivers/rcu/rcu_torture.sh @@ -0,0 +1,105 @@ +#!/bin/sh +# Copyright (c) 2014 Oracle and/or its affiliates. All Rights Reserved. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it would be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write the Free Software Foundation, +# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +# +# Author: Alexey Kodanev <[email protected]> +# +# One of the possible ways to test RCU is to use rcutorture kernel module. +# The test requiers that kernel configured with CONFIG_RCU_TORTURE_TEST. +# It runs rcutorture module using particular options and then inspects +# dmesg output for module's test results. +# For more information, please read Linux Documentation: RCU/torture.txt + +TCID="rcu_torture" +TST_TOTAL=14 + +. test.sh + +# default options +test_time=60 +num_readers=10 +num_writers=5 + +while getopts :ht:r:w: opt; do + case "$opt" in + h) + echo "Usage:" + echo "h help" + echo "t x time in seconds for each test-case" + echo "r x number of readers" + echo "w x number of writers" + exit 0 + ;; + t) test_time=$OPTARG ;; + r) num_readers=$OPTARG ;; + w) num_writers=$OPTARG ;; + *) + tst_brkm TBROK "unknown option: $opt" + ;; + esac +done + +cleanup() +{ + tst_resm TINFO "test interrupted, cleanup..." + rmmod rcutorture > /dev/null 2>&1 + tst_exit +} + +tst_require_root + +# check if module is present +modprobe rcutorture > /dev/null 2>&1 || \ + tst_brkm TCONF "Test requires rcutorture module" +rmmod rcutorture > /dev/null 2>&1 + +trap cleanup SIGINT + +rcu_type="rcu rcu_sync rcu_expedited rcu_bh rcu_bh_sync rcu_bh_expedited \ + srcu srcu_sync srcu_expedited srcu_raw srcu_raw_sync sched \ + sched_sync sched_expedited" + +est_time=`echo "scale=2; $test_time * $TST_TOTAL / 60 " | bc` +tst_resm TINFO "estimate time $est_time min" + +for type in $rcu_type; do + + tst_resm TINFO "$type: running $test_time sec..." + + modprobe rcutorture nreaders=$num_readers nfakewriters=$num_writers \ + stat_interval=60 test_no_idle_hz=1 shuffle_interval=3 \ + stutter=5 irqreader=1 fqs_duration=0 fqs_holdoff=0 \ + fqs_stutter=3 test_boost=1 test_boost_interval=7 \ + test_boost_duration=4 shutdown_secs=0 \ + stall_cpu=0 stall_cpu_holdoff=10 n_barrier_cbs=0 \ + onoff_interval=0 onoff_holdoff=0 torture_type=$type \ + > /dev/null 2>&1 || tst_brkm TBROK "failed to load module" + + sleep $test_time + + rmmod rcutorture > /dev/null 2>&1 || \ + tst_brkm TBROK "failed to unload module" + + # check module status in dmesg + result_str=`dmesg | sed -nE '$s/.*End of test: ([A-Z]+):.*/\1/p'` + if [ "$result_str" == "SUCCESS" ]; then + tst_resm TPASS "$type: completed" + else + tst_resm TFAIL "$type: $result_str, see dmesg" + fi +done + +tst_exit -- 1.7.1 ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/13534_NeoTech _______________________________________________ Ltp-list mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ltp-list
